I built my TV B-Gone but nothing is working. We followed the directions to a 'T' (except testing half-way through) but no results. We went back and measured the battery pack- it is OK. I have attached images of the front and back (with the one connection un-soldered). Please let me what to do next.

We were testing the LED- an earlier post said if we de-soldered that joint then it would be as if we hadn't completed the build. But alas, no lights went on. I tested and the batteries are supplying more than enough voltage, but no lights. I also viewed this through my iPad camera and no lights.